A small boy was struggling to move a heavy wooden cupboard, but it would not budge. He pushed and shoved with every muscle in his body, but couldn’t manage to move it even an inch! His father, passing by, stopped to watch his son’s futile efforts. Finally the father asked, “Son, are you using all your strength?”

“Yes, I am!” the boy cried, exasperated.

“No,” the father said calmly, “you’re not. You have not asked me to help you.”

“The next best thing to knowing something is knowing where to find it.”

“To make an apple pie from scratch, you must first create the universe.”